出版社：Society for Microwave Technique, Technologies and Systems, Serbia and Montenegro IEEE MTT-S Chapter
摘要：In this paper we present novel methods for tuning of resonances arising in rectangular ENZ waveguides. This kind of tuning is achieved using short longitudinal and inclined slots placed in the ENZ channel. It is shown that using this technique it is possible to tune the tunneling and Fabry-Perot resonances simultaneously by 9.3% and 4.2%, respectively. Also, it is possible to tune these resonances independently: the tunneling frequency by 4.5% and Fabry-Perrot resonances by 12.6%. In addition, equivalent circuits for the considered slot orientations are demonstrated along with the corresponding extracted parameters. Analytical expression for longitudinal slot reactance is derived and a very good agreement with the extracted values is observed.
关键词：Epsilon-near-zero (ENZ) waveguide; waveguide slots; equiuvalent circuits; frequency tuning.
